Tips:
Discountenance comes from the Old French word contenance, "demeanor," plus the Latin prefix dis-, meaning "against". If you discountenance someone, their self-assured demeanor will change to its opposite. Discountenance can also be used as a noun to denote disapproval, and it is a more formal term when used in this sense.

Usage Examples:

Amy was somewhat discountenanced to discover, later in the afternoon, that she had put her shirt on backwards that morning. (chagrined, abashed) adjective